All Clear continues the thrilling adventure from Blackout, where award-winning author Connie Willis returns us to the time-traveling future of 2060. In this gripping narrative, three Oxford historians - Michael Davies, Merope Ward, and Polly Churchill - are unexpectedly trapped in World War II England.

Michael is intent on observing heroism during the Miracle of Dunkirk, Merope is studying children evacuated from London, and Polly is posing as a shopgirl in the middle of the Blitz. However, small discrepancies in the historical record seem to indicate that one or all of them have somehow affected the past, potentially changing the outcome of the war.

The belief that the past can be observed but never altered has always been a core tenet of time-travel theory, yet now it seems that this theory is horribly, tragically wrong. Meanwhile, in 2060 Oxford, the historians’ supervisor, Mr. Dunworthy, and seventeen-year-old Colin Templer are engaged in a frantic struggle of their own.

This novel is more than just a culmination of the adventure that began with Blackout. It’s a clear-eyed celebration of faith, love, and the quiet, ordinary acts of heroism and sacrifice too often overlooked by history.